One of the greatest mysteries of evolutionary biology revolves around the question of how Earth’s original single-celled ancestors — the predecessors of all life on the planet — first made the critical transition to multicellularity.

Biology is the study of living organisms. Before the 19th century, biology was known as natural history (the study of all living things). Gottfried Reinhold Treviranus was the first person to coin the term biology. Biology comes from the Greek words bios (meaning "life") and logia (meaning "study of"). It is a common science that is a standard subject in schools and universities around the world. Over a million papers are published annually in biology and medicinal journals.
Not just a...